Read device GATT value

Used to read the value of a specified Handle on a connected device.

Refer RESTful-API Read the Value of a Specific Characteristic.

Example

import asyncio
import cassiablue


async def main():
    print("start gatt read")
    addr = "20:00:00:00:00:01"
    handle = 44
    ok, ret = await cassiablue.gatt_read(addr, handle)
    print("gatt read done:", type(ok), ok, type(ret), ret)


asyncio.run(main())

API

async cassiablue.gatt_read(addr: str, handle: str) → tuple[ok: bool, result: str]

Used to read the value of a specified Handle on a connected device. The result is returned as a JSON string.

Parameters:

• addr: Device MAC address

• handle: Handle to be read

Returns:

• ok: Whether the operation was successful

• result: Execution result as a JSON string. Example:

{
   "handle": "44",
   "value": "A00100"
}

Field Description

Field	Type	Description	Example
handle	str	Handle	44
value	str	Value	A00100